The conch shell is made of the same material as chalk, but unlike the crumbly rock, it's one of the toughest materials out there. If we can understand why it's so tough, we can mimic it to create ...

Conch shells, found buried at ancient Pueblo sites in New Mexico, were likely used as communication devices across the arid landscape. James Wainscoat via Unsplash If you were standing on the edge of ...